Roller side bearing.



L. W. BARBER & B. W. WEBB.

ROLLER SIDE BEARING.

APPLICATION I'LLED MAY {L 1014.

2 SHEETSSHEE1 1.

1. l/kziks'aes 10a. 311mm? 1% ZZ 666 L. W. BARBER & E. W. WEBB. ROLLER SIDE BEARING.

APPLICATION FILED MAY 8. 1914.

1,128,400. Patented Feb. 16, 1915.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

LEE BARBER AND EDWIN W. WEBB, OF CHICAGO, ILLINOIS, ASSIGNORS TO STANTD- ARD CAB TRUCK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW Jun -lair ROLLER SIDE BEARING.

- Speciflcatlon of Letters Patent.

Patented Feb. 16, 1915.

Application med Kay 8, 1914. Serial No. 837,129.

To all whom it may concern:

. Be it known that we, LEE W. BARBER and Enwns W. WEBB, citizens of the United States, residing at Qhicago, in the county of Cook and State of Illinois, have invented certai new and useful Improvements in Rollo Sidev Bearings; and we do hereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our' invention has for its object to provide an extremelysimple and highly eflicient roller side bearing for railway cars, and to such ends, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

The invention is illustrated in the accompanying drawings wherein like characters indicate like parts throughout the several views.

Referring to the drawings: Figure 1 is a lan view showing the improved side bearmg; Fig. 2 is a side elevation of the same; Fig. 3 is a plan view of the roller caging or spacing frame removed from the bearing; Fig. 4 is a section taken approximately on the line w w on Fig. 1, some parts being broken away; Fig. 5 is a view corresponding to Fig. 4, but illustrating a slightly modified construction; and Fig. 6 is a fragmentary view in horizontal section taken approxi- .mately on the line w w on Fig. 5.

The numeral 1 indicates the castin or housing of the side bearing, and whic is referably of channel form, formed with iiiterally spaced vertical flanges that confine the rollers 2 for radial travel within the limits of their movement. Preferably, the housing 1 is provided on its bottom with a flat steel bearing plate, upon which the rollers 2 directly run. In their ends, the rollers 2 are provided with axial indentations afi'ording seats for trunnions 4 formed on and projecting inward from the laterally s aced arms of aroller spacing cage 5, the sides of which,-a s shown, are connected by an integral bar located between the rollers. The cage 5'is preferably made of malleable iron, steel or other metal which is capable of being bent, so as to effect the engagement of the trunnions 4 with the seats in the ends of the rollers. Both the cage and the rollers are adapted to be inserted into the housing through one end thereof. The laterally spaced flanges of the said housing are prov ded with inturned ribs 1 that overlie the sides of the cage 5- and prevent the same, and the rollers from jumping out of working pos1t1 on. A centering spring is provided for yieldingly holding the roller cage 5 in a centered or intermediate position, and for restoring the same to normal position, when the rollers are relieved from the pressure of the load, so that the said 'r'ollers will always start from a proper initialcentered' position when the load is thrown thereon, and the car moved from a straight line onto a curve, or vice versa. One form of centering spring is shown in Figs. 1 to 4, inclusive,'and another form is shown in Figs. 5 and 6.

Referring first to the first noted centering device, the numeral 7 indicates a spriiig having extended arms and a coiled portion 7, which latter is telescoped over a raised boss 1 on the housing 1 and is held in position by a washer 8 and rivet 9. The lower and relatively short arm of this spring 7 closely fits a notch 1 formed in the adjacent side of the housing 1, while the upper and relatively long arm of said spring works freely through an elongated slot 1 in the said housing wall, and engages between a pair of depending lugs 5 on the cross bar of the roller cage 5.

It is important to note that the free end of the spring 7 is attached to the intermediate portion of the connecting bar 5 of the roller spacing cage. This applies the force of the spring to the central portion of the cage and prevents the spring from tending to throw the ca e out of its proper arc of movement, and once, does not cramp the ca e within the housing.

he centering device shown in Figs. 5 and 6 comprises simply a flat s ring 10, th at works through and closely ts a slot 11 formed in theadjacent wall of the hous. '1g 1 and has its outer end fixed between lugs 12 on the housing, as shown, by means of a split key 13, while the inner and free end of the said spring works between the lugs5 of the said roller cage 5. The centering device shown in Figs. 5 and 6 is 'probably the best form of the two illustrated, but either form will yieldingly center the rollers and cage.

In the construction illustrated, all of the load and bearin is taken in a crushin strain on the rol ers, and no part thereof:

on the trunnions or pivotal connections between the rollers and spacing cage. It is a well known fact that the load is never simultaneously carried on the roller side bearings on opposite sides of the car, but will be alternatel thrown from one side to the other, depen ing on the load and the direction of the curve. Where roller centering devices are not provided, the rollers are liable to be worked out of proper initial working osition, due to the fact that the rollers, w en relieved of the load or curve,

may be left at one extreme, and the next time the load is delivered onto the same, will be carried farther in the same direction,

away from a centered or intermediate posi tion. The centering devices automatically bring the rollers to centered or intermediate initial positions when relieved from load, so that they will stand always from the right point when caused to carry the load.

What we'claim is: 1. A roller side bearing comprising a body member havin a roller bearing surface, a lurality of rol ers mounted to travel on said caring surface, a roller spacing cage comprising laterally spaced arms to which said rollers are journaled and havinga b'ar con-- necting them between said rollers, and a centering spring anchored. to said body member with its free end extended and attached to the intermediate portion of the connecting bar of said cage.

2. In a roller side bearin the combination with a body member iaving a roller bearing surface, of a plurality of rollers mounted to travel on said bearing surface and provided with axial trunnion seats, and a roller spacing cage formed by laterally spaced arms and an intermediate connecting bar, the said arms, at their ends,- completely separated and having trunnions adapted to be engaged with the axial seats of said rollers by springing of the said arms.

In testimony whereof we afiix our signatures in presence of two witnesses.

LEE W. BARBER. EDWIN W. WEBB.

Witnesses:

J. T. MILNER, CHARLSE S. WALTON. 

